<html>
    <head>
        <script type="text/javascript">
            function show_confirm()
            {
                var r = confirm("Press a button!");
                if (r == true)
                {
                    alert("You pressed OK!");
                }
                else
                {
                    alert("You pressed Cancel!");
                }
            }
        </script>
    </head>
    <body>

        <input type="button" onclick="show_confirm()" value="Show a confirm box" />

    </body>
</html>
